/**
 * @file
 * This file (together with sockets.h) aims to provide structs and functions
 * from
 * - arpa/inet.h
 * - netinet/in.h
 *
 */

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef LWIP_HDR_INET_H
#define LWIP_HDR_INET_H

#include "lwip/opt.h"

#if LWIP_SOCKET_EXTERNAL_HEADERS
#include LWIP_SOCKET_EXTERNAL_HEADER_INET_H
#else /* LWIP_SOCKET_EXTERNAL_HEADERS */

#include "lwip/def.h"
#include "lwip/ip_addr.h"
#include "lwip/ip6_addr.h"

#ifdef __cplusplus
extern "C" {
#endif

/* If your port already typedef's in_addr_t, define IN_ADDR_T_DEFINED
   to prevent this code from redefining it. */
#if !defined(in_addr_t) && !defined(IN_ADDR_T_DEFINED)
typedef u32_t in_addr_t;
#endif

struct in_addr {
    in_addr_t s_addr;
};

struct in6_addr {
    union {
        u32_t u32_addr[4];
        u8_t u8_addr[16];
    } un;
#define s6_addr un.u8_addr
};

/** 255.255.255.255 */
#define INADDR_NONE IPADDR_NONE
/** 127.0.0.1 */
#define INADDR_LOOPBACK IPADDR_LOOPBACK
/** 0.0.0.0 */
#define INADDR_ANY IPADDR_ANY
/** 255.255.255.255 */
#define INADDR_BROADCAST IPADDR_BROADCAST

/** This macro can be used to initialize a variable of type struct in6_addr
    to the IPv6 wildcard address. */
#define IN6ADDR_ANY_INIT                                                       \
    {                                                                          \
        {{0,0,0,0}}                                                            \
    }
/** This macro can be used to initialize a variable of type struct in6_addr
    to the IPv6 loopback address. */
#define IN6ADDR_LOOPBACK_INIT                                                  \
    {                                                                          \
        {                                                                      \
            {                                                                  \
                0, 0, 0, PP_HTONL(1)                                           \
            }                                                                  \
        }                                                                      \
    }
/** This variable is initialized by the system to contain the wildcard IPv6
 * address. */
extern const struct in6_addr in6addr_any;

/* Definitions of the bits in an (IPv4) Internet address integer.

   On subnets, host and network parts are found according to
   the subnet mask, not these masks.  */
#define IN_CLASSA(a) IP_CLASSA(a)
#define IN_CLASSA_NET IP_CLASSA_NET
#define IN_CLASSA_NSHIFT IP_CLASSA_NSHIFT
#define IN_CLASSA_HOST IP_CLASSA_HOST
#define IN_CLASSA_MAX IP_CLASSA_MAX

#define IN_CLASSB(b) IP_CLASSB(b)
#define IN_CLASSB_NET IP_CLASSB_NET
#define IN_CLASSB_NSHIFT IP_CLASSB_NSHIFT
#define IN_CLASSB_HOST IP_CLASSB_HOST
#define IN_CLASSB_MAX IP_CLASSB_MAX

#define IN_CLASSC(c) IP_CLASSC(c)
#define IN_CLASSC_NET IP_CLASSC_NET
#define IN_CLASSC_NSHIFT IP_CLASSC_NSHIFT
#define IN_CLASSC_HOST IP_CLASSC_HOST
#define IN_CLASSC_MAX IP_CLASSC_MAX

#define IN_CLASSD(d) IP_CLASSD(d)
#define IN_CLASSD_NET IP_CLASSD_NET       /* These ones aren't really */
#define IN_CLASSD_NSHIFT IP_CLASSD_NSHIFT /*   net and host fields, but */
#define IN_CLASSD_HOST IP_CLASSD_HOST     /*   routing needn't know. */
#define IN_CLASSD_MAX IP_CLASSD_MAX

#define IN_MULTICAST(a) IP_MULTICAST(a)

#define IN_EXPERIMENTAL(a) IP_EXPERIMENTAL(a)
#define IN_BADCLASS(a) IP_BADCLASS(a)

#define IN_LOOPBACKNET IP_LOOPBACKNET

#define IN6_IS_ADDR_UNSPECIFIED(a) ip6_addr_isany((ip6_addr_t *)(a))
#define IN6_IS_ADDR_LOOPBACK(a) ip6_addr_isloopback((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MULTICAST(a) ip6_addr_ismulticast((ip6_addr_t *)(a))
#define IN6_IS_ADDR_LINKLOCAL(a) ip6_addr_islinklocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_SITELOCAL(a) ip6_addr_issitelocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_V4MAPPED(a) ip6_addr_isipv4mappedipv6((ip6_addr_t *)(a))
#define IN6_IS_ADDR_V4COMPAT(a) ip6_addr_isipv4compat((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MC_NODELOCAL(a)                                            \
    ip6_addr_ismulticast_iflocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)                                            \
    ip6_addr_ismulticast_linklocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MC_SITELOCAL(a)                                            \
    ip6_addr_ismulticast_sitelocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)                                             \
    ip6_addr_ismulticast_orglocal((ip6_addr_t *)(a))
#define IN6_IS_ADDR_MC_GLOBAL(a) ip6_addr_ismulticast_global((ip6_addr_t *)(a))

#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN IP4ADDR_STRLEN_MAX
#endif
#if LWIP_IPV6
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN IP6ADDR_STRLEN_MAX
#endif
#endif

#if LWIP_IPV4

#define inet_addr_from_ip4addr(target_inaddr, source_ipaddr)                   \
    ((target_inaddr)->s_addr = ip4_addr_get_u32(source_ipaddr))
#define inet_addr_to_ip4addr(target_ipaddr, source_inaddr)                     \
    (ip4_addr_set_u32(target_ipaddr, (source_inaddr)->s_addr))

/* directly map this to the lwip internal functions */
#define inet_addr(cp) ipaddr_addr(cp)
#define inet_aton(cp, addr) ip4addr_aton(cp, (ip4_addr_t *)addr)
#define inet_ntoa(addr) ip4addr_ntoa((const ip4_addr_t *)&(addr))
#define inet_ntoa_r(addr, buf, buflen)                                         \
    ip4addr_ntoa_r((const ip4_addr_t *)&(addr), buf, buflen)

#endif /* LWIP_IPV4 */

#if LWIP_IPV6
#define inet6_addr_from_ip6addr(target_in6addr, source_ip6addr)                \
    {                                                                          \
        (target_in6addr)->un.u32_addr[0] = (source_ip6addr)->addr[0];          \
        (target_in6addr)->un.u32_addr[1] = (source_ip6addr)->addr[1];          \
        (target_in6addr)->un.u32_addr[2] = (source_ip6addr)->addr[2];          \
        (target_in6addr)->un.u32_addr[3] = (source_ip6addr)->addr[3];          \
    }
#define inet6_addr_to_ip6addr(target_ip6addr, source_in6addr)                  \
    {                                                                          \
        (target_ip6addr)->addr[0] = (source_in6addr)->un.u32_addr[0];          \
        (target_ip6addr)->addr[1] = (source_in6addr)->un.u32_addr[1];          \
        (target_ip6addr)->addr[2] = (source_in6addr)->un.u32_addr[2];          \
        (target_ip6addr)->addr[3] = (source_in6addr)->un.u32_addr[3];          \
        ip6_addr_clear_zone(target_ip6addr);                                   \
    }

/* directly map this to the lwip internal functions */
#define inet6_aton(cp, addr) ip6addr_aton(cp, (ip6_addr_t *)addr)
#define inet6_ntoa(addr) ip6addr_ntoa((const ip6_addr_t *)&(addr))
#define inet6_ntoa_r(addr, buf, buflen)                                        \
    ip6addr_ntoa_r((const ip6_addr_t *)&(addr), buf, buflen)

#endif /* LWIP_IPV6 */

#ifdef __cplusplus
}
#endif

#endif /* LWIP_SOCKET_EXTERNAL_HEADERS */

#endif /* LWIP_HDR_INET_H */
